Electronic article surveillance (EAS) is popularity amongst retailers looking for inventory protection. EAS refers to the security tags that are attached to merchandise and cause an alarm to sound on exiting the store. Regularly, even when an alarm does sound, a shoplifter walks out casually and is not confronted if no guards are present. This is due to the high number of false alarms, especially in malls, due to "tag pollution" whereby non-deactivated tags from other stores set off the alarm. This can be overcome with newer systems and a properly trained staff. Some new systems either do not alarm from "tag pollution" or they produce a specific alarm when a customer enters the store with a non-deactivated tag so that store personnel can remove or deactivate it so it does not produce a false alarm when exiting the store. However, with tags that are stuck onto merchandise with glue (rather than being superimposed on) the shoplifter can easily scrape off the tag in their pocket.